Form 4: Ameren Executive Sells 1,500 Shares Under 10b5-1 Plan

Gwendolyn G. Mizell, SVP & CSO of an Ameren subsidiary, sold 1,500 shares of common stock for $99.50 per share on September 3, 2025.

Summary

• Gwendolyn G. Mizell, identified as an SVP & CSO of an Ameren subsidiary, reported a transaction involving Ameren Corp (AEE) common stock.
• The transaction, dated September 3, 2025, was a sale of 1,500 shares of common stock.
• The shares were sold at a price of $99.50 per share.
• The transaction was made pursuant to a contract, instruction, or written plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).
• Following this transaction, Mizell directly beneficially owns 7,629 shares of Ameren Corp common stock.
• Additionally, Mizell indirectly holds an estimated 2,385 share equivalents in the unitized stock fund within the Ameren Corporation Savings Investment Plan as of August 31, 2025.

Sentiment

Score: 5

Explanation: A neutral event. Insider selling under a 10b5-1 plan is a routine occurrence and does not typically signal a change in company fundamentals or management's outlook, thus having a neutral sentiment impact.

Negatives

• An insider, Gwendolyn G. Mizell, sold 1,500 shares of common stock.

Future Outlook

NA

Industry Context

This filing reports a routine insider transaction and does not provide information directly related to broader industry trends or competitive landscape analysis.

Stakeholder Impact

• Shareholders: The sale of 1,500 shares represents a negligible amount relative to Ameren's total outstanding shares, thus having minimal impact on overall share dilution or market dynamics. The 10b5-1 plan mitigates concerns about the timing of the sale.

Key Dates

Recommendation

The filing reports a routine insider stock sale executed under a pre-arranged 10b5-1 plan. Such transactions are generally not indicative of a change in the company's fundamental outlook or a signal for investors to alter their positions. The volume of shares sold is not significant enough to warrant a change in investment recommendation based solely on this filing.

Keywords

Ameren Corp, AEE, Insider Trading, Form 4, Stock Sale, Gwendolyn G. Mizell, 10b5-1 Plan, Executive Transaction